Seismic Performance Evaluation of 3 Story OMRCF Based on Scaled Model Testing

축소모델실험에 의한 철근콘크리트 3층 보통모멘트골조의 구조 성능 평가

  • Han Sang-Whan (Dept. of Architectural Engineering, Hanyang University) ;
  • Kwon Gun-Up (Dept. of Architectural Engineering, Hanyang University)
  • Published : 2005.10.01


ACI 318 (1999) defines three types of moment frames: Ordinary Moment Resisting Concrete Frame (OMRCF), Intermediate Moment Resisting Concrete Frame (IMRCF), and Special Moment Resisting Concrete Frame (SMRCF). OMRCF is the most popular type of moment frame in mild seismic zones that requires the least detail and design requirements. This study focuses on the seismic performance of Ordinary Moment Resisting Concrete Frames (OMRCF) designed only for gravity loads. For this purpose a 3-story OMRCF was designed in compliance with the minimum design requirements in ACI 318 (1999). An one third 3 story specimen was made and tested. For scaled model, the similitude law of true replica was applied. The specimen was loaded with quasi-static reversed cyclic lateral loading. The overall behavior of OMRCF is quite stable without abrupt strength degradation. It is found that tested frame has the base shear strength larger than the design base shear for seismic zone 1, 2A and 2B calculated using UBC 1997.


  1. American Concrete Institute, Building code requirements for reinforced concrete, ACI 318-95,99, Detroit, Michigan, 1995, 1999
  2. Applied Technology Council, ATC 40: Seismic Evaluation and Retrofit of Conaete Buildings Vol.1 & Vol.2, California Seismic Safety Commission No. SSC 96-01, Nov. 1996
  3. Computers and Structures Inc., SAP2000, Berkeley, California, 1997
  4. CSI Berkeley, SAP2000 Concrete Design Manual, Compute & Structures, Inc., 2000, pp.17-41
  5. International Conference on Building Officials, Uniform Building Code(UBC), Whittier, California 1997, pp.2-9-2-20
  6. Building Seismic Safety Council, NEHRP Recommended Provisions for the Development if Seismic Regulation for New Buildings, Part 1 & 2, Provisions and Commentary, FEMA, Washington, D.C., 1994, 1997
  7. Park, R, 'Evaluation of ductility of structures and structural assemblages from laboratory testing', Bulletin cf the New Zealand National Society for Earthquake Engineering, Vol.2, No.3, 1989, pp.155-166
  8. Portland Cement Association, Notes on ACI 318-99 Building Code Requirements for Structural Concrete, Skokie, Illinois, 1999